The Mariana Islands are an archipelago located in the Northwest Pacific Ocean consisting of two territories of the United States: the Northern Mariana Islands and Guam. The Mariana Islands lie in the path of typhoons and it is common for the islands to be threatened by tropical depressions, storms, and occasional typhoons during the wet season. The highest risk of typhoons is from August through November. They can, however, occur year-round. This is a list of typhoons that caused deaths, injuries and/or damage on the Mariana Islands.

Typhoons are monitored by the United States Joint Typhoon Warning Center and due to the potential damage typhoons can cause, the tropical cyclones are concerns towards civilian and military communities on the islands. Some of the typhoons that have significantly impacted the islands since 1945 are Typhoon Karen of 1962, Pamela of 1976, Omar of 1992, Paka of 1997, Yutu of 2018, Mawar of 2023, and Sinlaku and Bavi of 2026.

Background and Climatology The Mariana Islands are overseas territories of the United States. Being in the Northwest Pacific Ocean, the islands are often threatened by typhoons in a year-round basis. In preparations for the storms, the islands may be put under Tropical Cyclone Condition of Readiness, instructing residents towards safety based on the severity of the storm. The Joint Typhoon Warning Center monitors the basin, and issues warnings on significant tropical cyclones for the United States Government, assigning them two-digit TC numbers (with suffix "W"). These warnings use a 1-minute sustained wind speed and can be compared to the Saffir–Simpson hurricane wind scale; however, the JTWC uses their own scale for intensity classifications in this basin. The United States' Joint Typhoon Warning Center (JTWC) unofficially classifies typhoons with wind speeds of at least —the equivalent of a strong Category 4 storm on the Saffir–Simpson scale—as super typhoons.

Tropical cyclogenesis in the West Pacific commences over the summer monsoon trough. The trough peaks on October, before being dominated by winter trade winds by December. The islands are located east of the primary area for development.

List of storms Pre-1900s October 7, 1671: "Eye passed directly over island, with most of the homes on the island toppled, as well as the church and the rectory suffering the same fate. A great many people were killed by falling debris and inadequate shelter while the damage to agriculture crops was a serious loss to the people." November 11, 1680: "It lasted two days and caused frightful disorder. Almost all the houses were toppled over, canoes smashed, trees and crops ruined. To add to the disaster, the sea became so swollen that the people were obliged to flee to the mountains" November 20, 1693: "It began at dusk on the night of November 20 with a deluge of rain. The wind moved from north to south and whipped up the sea to such a manner that it seemed as if the island of Guam would be submerged. The sea broke its bounds and spread inland taking trees, houses and churches with it. Even the fortress at Agana toppled and was washed away. Not a house nor building remained standing on the island. Inland from the shore, the soil was covered with sand and stones left there by the subsiding sea." December 1733: "severely damaged all trees and food crops. In Agaña it destroyed all buildings that had remained standing after the town fire of March of the same year." April 7, 1807: "All the houses destroyed by the strong typhoon." September 9, 1822: "damaged the Palacio and other Spanish administration buildings, among them the government store" May 23, 1847: "A typhoon of horrible wind destroyed a greater part of the houses. No one killed." August 10, 1848: "described as a devastating typhoon that caused extensive damage" September 23, 1853: "causing widespread devastation" April 17, 1859: "Strong typhoon - a ship, although having two anchors, was thrown against the reef." February 14, 1864: "Damage to roads and houses, crop lost due to salt spray." June 21–23, 1868: "Roofs of houses went off, but no casualties. One ship was thrown onto another in harbor." September 19, 1872: "caused damage to buildings and agricultural production, and also wrecked a Spanish mail ship. [...] Damage to Spanish buildings includes roof damage to the Palacio in Agaña, as well as the Casa Reál (former palace) in Umatac."

1900s

May 26, 1900: "severely affecting the southern part of the island by demolishing structures in Sumay, Agat, Merizo and Inarajan. Damage to vegetation was substantial, with all crops destroyed. The vessel was torn off her moorings in Apra Harbor and blown onto a reef" November 13, 1900: "A typhoon devastates Guam Island, destroying towns and 100 lives; the cruiser founders." October 19, 1901: The center of a tropical cyclone passed between Guam and Rota, unroofing several native houses along the Agana Beach. Wharfs were destroyed or badly damaged.

1910s October 31, 1911: A storm passed south of Guam, taking down telephone poles in the south side of the island. Many houses in Merizo had their roofs torn. August 26–30, 1912: Crops in Guam were damaged by a typhoon. December 15–17, 1912: Crops in Guam were damaged by a typhoon. September 17–19, 1913: The center of a tropical cyclone passed north of Guam, damaging copra crops with winds. November 10, 1913: This typhoon took down many trees and telephone poles and unroofed houses across Guam. Storm surge washed away a wharf in Agana, and sank many sampans. It flooded all low-lying areas of the town. July 7, 1914: Passing north of Guam, typhoon-force winds swept in Apra Harbor, which were the heaviest in years. The storm damaged crops, buoyage, and boat channels. September 2–3, 1915: Gusty winds and heavy rain damaged crops on the northern side of the island. July 6, 1918: The eye of this storm passed over Agana, which the atmospheric pressure was measured at . The typhoon killed six, left thousands homeless, and caused over thousands of dollars in property damage. Natives had their homes overturned while substantial structures had their roofs torn or become demolished. Many telephone and power poles as well as coconut trees were downed. It is thought to have caused enormous damage to crops. A palm tree at the mouth of the Agana River survived the typhoon, which later inspired the design of the Seal of Guam. September 17, 1918: A typhoon passed northeast of the island, causing minor damage to crops. August 20–21, 1919: The center of this storm passed south of Guam and caused minor damage to crops.

1920s March 26, 1923: A slow-moving typhoon passed south of the island, with its atmospheric pressure measured at . Its winds damaged the southern portion of the island. Bridges and roads were washed out. October 1, 1924: A typhoon passed south of Guam with atmospheric pressure of , which was measured at Sumay. The storm produced rainfall of in 15 hours before going further to within 30 hours. The total of rainfall was measured in 48 hours. The flood caused a death and destroyed 50 buildings, causing $100,000 in losses. Overflowed rivers swept away houses of natives and sections of roads and bridges. October 25, 1925: The center of this storm passed south of Guam with a pressure of , producing heavy waves along the southern shore between Inarajan and Merizo. Roads and bridges were damaged, and strong winds downed hundreds of trees and unroofed many houses.

1930s December 3, 1935: A typhoon passed southwest with a pressure of and gusts of , damaging trees and crops, though structures were slightly damaged.

1940s November 3, 1940: A storm destroyed a majority of the island's crops, caused extensive damage to many military structures, and destroyed thousands of residential homes. Governor George McMillin requested $50,000 (1940 USD, $  USD) in aid from the American Red Cross. August 3, 1941: The eye of this typhoon passed the northern point of Guam. A pressure of and wind gusts of were estimated at Agana. The storm also produced rainfall of . Damage was done towards roofs and telephone, electrical lines and trees were also downed. Rivers that overflowed flooded houses nearby and washed out roads. September 21, 1946: Typhoon Querida's eye was between Rota and Guam, producing gusts of . The storm damaged temporary buildings and Quonset huts. Seventy percent of Orote Point Naval Air Station suffered damage, and many large hangars at Harmon Field sustained damage. The village of Agat had 30 of its houses destroyed, with another 30 being very damaged, although only 1 injury was reported. November 7, 1949: Typhoon Allyn brought wind gusts of over to the island. 2,500 houses were damaged across Guam, and 60% of Inarajan was destroyed by flooding. The storm completely flooded Cocos Island. Four major bridges collapsed. The damage totaled $91.1 million and there were many injuries, although no deaths occurred.

1950s May 9, 1950: Typhoon Doris produced of standing water in Inarajan, which washed out parts of the road between Inarajan and Merizo. December 31, 1951: Typhoon Hester passed south of Guam by , and no damage to military facilities were reported. Storm surge reached inland, to about above sea level. The only damage reported were crops being lashed by the waves on the south side of the island, and a new section of highway near Ylig River was washed away. Two shore wave recorders installed by the University of California, Berkeley, located in Tarague Beach and Ylig River, were destroyed. There were no casualties on the island. February 22, 1953: Typhoon Irma produced gusts of while south of Agana, and also produced of rain in 15 hours, damaging trees and crops. August 10, 1953: Typhoon Nina flooded the Inarajan road and Talofofo bridge and also uprooted trees. October 14–16, 1953: Typhoon Alice's 24-hour rainfall total at Andersen Air Base, , was the record high in Guam until Typhoon Pamela of 1976 struck the island. The resulting floods washed away four bridges across the island, cutting off access to the villages of Talofofo, Inarajan, Merizo, and Umatac. Floodwaters at Tamuning reached high. Electricity was shut off in areas with flooding issues, and a boil-water advisory was in effect. Multiple roads, including Highways 4 and 8, were rendered impassable, and Marine Drive had debris floating and stalled cars alongside it. November 16, 1957: Typhoon Lola's eye passed south of Agana with gusts of over , stripping roofs from structures and breaking windows. Quonset huts were also blown down. Many houses were flooded by overflowing rivers. Lola caused $5 million in damage, and no casualties were reported.

1960s

September 10, 1961: Typhoon Nancy destroyed about half of all crops on the southern end of Guam and a total of $40,000 worth of damage was done to roads on the island.JTWC Nancy Report accessed March 7, 2006 November 11, 1962: Typhoon Karen was regarded as the worst typhoon to ever impact Guam. 95 percent of homes were destroyed, and those left standing were damaged. Approximately 45,000 people, mostly Guamanians, were left homeless. 11 people lost their lives and about 100 others were injured. Losses across the island amounted to $250 million (1962 USD, $  USD). The damage across Guam was described as "'much more serious" than it had been during the second Battle of Guam, when American troops retook the island from the Japanese. The U.S. Navy described the damage as equal to that of an indirect hit from a nuclear bomb.Cunningham, p.301 Acting governor Manuel Guerrero said that the recovery effort of the previous 17 years had been "completely wiped out".